Agilent Technologies E4440A User Manual

Chapter 2 67
Instrument Functions: A - L
Auto Couple
Instrument Functions: A - L
2.2.6.2 On
When
ADC Dither is On, the linearity of low-level signals is improved. However, the ADC
dynamic range is reduced to make room for the dither. As a result, the noise floor of the
analyzer is somewhat compromised. So making measurements with ADC dither on gives
you better amplitude linearity, but turning ADC dither off gives you a lower noise floor
(better sensitivity).
Key Path:
Auto Couple
State Saved: Saved in instrument state
Remote Command:
[:SENSe]:ADC:DITHer[:STATe] ON
Example: ADC:DITH ON
2.2.6.3 Off
When
ADC Dither is Off, the instrument noise floor is improved. If ADC dither is on the
ADC dynamic range is reduced to make room for the dither. As a result, the noise floor of
the analyzer is somewhat compromised. So making measurements with ADC dither on
gives you improved amplitude linearity. but turning ADC dither off gives you a lower noise
floor (better sensitivity).
Key Path:
Auto Couple
State Saved: Saved in instrument state
Remote Command:
Use [:SENSe]:ADC:DITHer[:STATe] OFF
Example: :ADC:DITH OFF
2.2.7 ADC Ranging
Accesses the keys to set the ADC ranging to provide for the best signal to noise ratio
(
Bypass), or for the best FFT speed (Autorange).
Key Path:
Auto Couple
State Saved: Saved in Instrument State
Factory Preset: Autorange

Agilent Technologies E4440A Specifications

General

Brand	Agilent Technologies
Model	E4440A
Category	Measuring Instruments
Language	English